| 主权项 |
1. A portable fluidized particle abrasion device for dispensing powders and other granular material comprising:
a) a granular material dispensing chamber having an upper portion, a lower portion, side walls and a bottom, the bottom defining an exit orifice; b) a flow valve for controlling the rate of the granular materials exiting the dispensing chamber through the exit orifice, the flow valve comprising:
i) an elongate fluid flow chamber for receiving granular materials exiting the dispensing chamber through the exit orifice, the fluid flow chamber having a longitudinal axis, a cross-sectional area, an inlet port in fluid tight communication with the exit orifice for allowing granular materials exiting the chamber through the exit orifice to enter the fluid flow chamber, a fluid flow inlet port for receiving the flow of a carrier fluid to the fluid flow chamber and a fluidized granular material exit port for dispensing a fluidized granular mixture of the material away from the fluid low chamber; andii) a flow regulator comprising a lead screw disposed at an angle with respect to the longitudinal axis of the fluid flow chamber and adjustable to alternatively open and close the exit orifice of the dispensing chamber and to alternatively expand and contract distance between the lead screw and the exit orifice, so as to control the flow of fluidized granular material dispensed through the fluidized granular material exit pore, and c) a C-shaped flow facilitator tube having a flexible duct capable of furling and unfurling in response to pulsations of a pressurized fluid, the duct being hollow, closed-ended and having an inlet port, the flow facilitator being disposed within the dispensing chamber and around the exit orifice and a flow facilitator pressurizer to alternatively increase and decrease the pressure within the tube. |
